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                    1.1：移动开发技术简介
            
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                    1.2：初识Flutter
            
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                    1.3：搭建Flutter开发环境
            
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                    1.4：Dart语言简介
            
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                    2.1：计数器示例
            
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                    2.2：路由管理
            
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                    2.4：资源管理
            
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                    2.5：调试Flutter APP
            
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                    2.6：Dart线程模型及异常捕获
            
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                    第三章：基础组件
            
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                    3.1：Widget简介
            
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                    3.2：状态管理
            
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                    3.3：文本、字体样式
            
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                    3.4：按钮
            
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                    3.5：图片和Icon
            
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                    3.6：单选框和复选框
            
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                    3.7：输入框和表单
            
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                    3.8：进度指示器
            
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                    第四章：布局类组件
            
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                    4.1：布局类组件简介
            
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                    4.2：线性布局（Row、Column）
            
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                    4.3：弹性布局（Flex）
            
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                    4.4：流式布局（Wrap、Flow）
            
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                    4.5：层叠布局（Stack、Positioned）
            
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                    4.6：对齐与相对定位（Align）
            
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                    第五章：容器类组件
            
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                    5.1：填充（Padding）
            
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                    5.2：尺寸限制类容器（ConstrainedBox等）
            
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                    5.3：装饰容器（DecoratedBox）
            
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                    5.4：变换（Transform）
            
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                    5.5：Container容器
            
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                    5.6：Scaffold、TabBar、底部导航
            
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                    5.7：剪裁（Clip）
            
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        <li class="chapter " data-level="2.6" data-path="../chapter6/">
            
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                    第六章：可滚动组件
            
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        <li class="chapter " data-level="2.6.1" data-path="../chapter6/intro.html">
            
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                    6.1：可滚动组件简介
            
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                    6.2：SingleChildScrollView
            
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                    6.3：ListView
            
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                    6.4：GridView
            
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                    6.5：CustomScrollView
            
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                    6.6：滚动监听及控制（ScrollController）
            
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                    第七章：功能型组件
            
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                    7.1：导航返回拦截（WillPopScope）
            
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                    7.2：数据共享（InheritedWidget）
            
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                    7.3： 跨组件状态共享（Provider）
            
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                    7.4：颜色和主题（Theme）
            
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                    7.5：异步UI更新（FutureBuilder、StreamBuilder）
            
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        <li class="chapter " data-level="2.7.6" data-path="../chapter7/dailog.html">
            
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                    7.6：对话框详解
            
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        <li class="header">进阶篇</li>
        
        
    
        <li class="chapter " data-level="3.1" data-path="../chapter8/">
            
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                    第八章：事件处理与通知
            
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        <li class="chapter " data-level="3.1.1" data-path="../chapter8/listener.html">
            
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                    8.1：原始指针事件处理
            
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        <li class="chapter " data-level="3.1.2" data-path="../chapter8/gesture.html">
            
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                    8.2：手势识别
            
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        <li class="chapter " data-level="3.1.3" data-path="../chapter8/eventbus.html">
            
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                    8.3：全局事件总线
            
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        <li class="chapter " data-level="3.1.4" data-path="../chapter8/notification.html">
            
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                    8.4：通知(Notification)
            
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        <li class="chapter " data-level="3.2" data-path="../chapter9/">
            
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                    第九章：动画
            
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        <li class="chapter " data-level="3.2.1" data-path="../chapter9/intro.html">
            
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                    9.1：Flutter动画简介
            
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        <li class="chapter " data-level="3.2.2" data-path="../chapter9/animation_structure.html">
            
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                    9.2：动画结构
            
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        <li class="chapter " data-level="3.2.3" data-path="../chapter9/route_transition.html">
            
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                    9.3：自定义路由过渡动画
            
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        <li class="chapter " data-level="3.2.4" data-path="../chapter9/hero.html">
            
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                    9.4：Hero动画
            
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        <li class="chapter " data-level="3.2.5" data-path="../chapter9/stagger_animation.html">
            
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                    9.5：交织动画
            
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        <li class="chapter " data-level="3.2.6" data-path="../chapter9/animated_switcher.html">
            
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                    9.6：通用“动画切换”组件（AnimatedSwitcher）
            
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        <li class="chapter " data-level="3.2.7" data-path="../chapter9/animated_widgets.html">
            
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                    9.7：动画过渡组件
            
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        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.3" data-path="../chapter10/">
            
                <a href="../chapter10/">
            
                    
                    第十章：自定义组件
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.3.1" data-path="../chapter10/intro.html">
            
                <a href="../chapter10/intro.html">
            
                    
                    10.1：自定义组件方法简介
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.3.2" data-path="../chapter10/combine.html">
            
                <a href="../chapter10/combine.html">
            
                    
                    10.2：组合现有组件
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.3.3" data-path="../chapter10/turn_box.html">
            
                <a href="../chapter10/turn_box.html">
            
                    
                    10.3：组合实例：TurnBox
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.3.4" data-path="../chapter10/custom_paint.html">
            
                <a href="../chapter10/custom_paint.html">
            
                    
                    10.4：自绘组件（CustomPaint与Canvas）
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.3.5" data-path="../chapter10/gradient_circular_progress_demo.html">
            
                <a href="../chapter10/gradient_circular_progress_demo.html">
            
                    
                    10.5：自绘实例：圆形渐变进度条(自绘)
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.4" data-path="./">
            
                <a href="./">
            
                    
                    第十一章：文件操作与网络请求
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.4.1" data-path="file_operation.html">
            
                <a href="file_operation.html">
            
                    
                    11.1：文件操作
            
                </a>
            

            
        </li>
    
        <li class="chapter active" data-level="3.4.2" data-path="http.html">
            
                <a href="http.html">
            
                    
                    11.2：Http请求-HttpClient
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.3" data-path="dio.html">
            
                <a href="dio.html">
            
                    
                    11.3：Http请求-Dio package
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.4" data-path="download_with_chunks.html">
            
                <a href="download_with_chunks.html">
            
                    
                    11.4：实例：Http分块下载
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.5" data-path="websocket.html">
            
                <a href="websocket.html">
            
                    
                    11.5：WebSocket
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.6" data-path="socket.html">
            
                <a href="socket.html">
            
                    
                    11.6：使用Socket API
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.4.7" data-path="json_model.html">
            
                <a href="json_model.html">
            
                    
                    11.7：Json转Dart Model类
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.5" data-path="../chapter12/">
            
                <a href="../chapter12/">
            
                    
                    第十二章：包与插件
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.5.1" data-path="../chapter12/develop_package.html">
            
                <a href="../chapter12/develop_package.html">
            
                    
                    12.1：开发package
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.2" data-path="../chapter12/platform-channel.html">
            
                <a href="../chapter12/platform-channel.html">
            
                    
                    12.2：平台通道简介
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.3" data-path="../chapter12/develop_plugin.html">
            
                <a href="../chapter12/develop_plugin.html">
            
                    
                    12.3：开发Flutter插件
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.4" data-path="../chapter12/android_implement.html">
            
                <a href="../chapter12/android_implement.html">
            
                    
                    12.4：插件开发：实现Android端API
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.5" data-path="../chapter12/ios_implement.html">
            
                <a href="../chapter12/ios_implement.html">
            
                    
                    12.5：插件开发：实现IOS端API
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.5.6" data-path="../chapter12/texture_platformview.html">
            
                <a href="../chapter12/texture_platformview.html">
            
                    
                    12.6：Texture和PlatformView
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.6" data-path="../chapter13/">
            
                <a href="../chapter13/">
            
                    
                    第十三章：国际化
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.6.1" data-path="../chapter13/multi_languages_support.html">
            
                <a href="../chapter13/multi_languages_support.html">
            
                    
                    13.1：让App支持多语言
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.6.2" data-path="../chapter13/locallization_implement.html">
            
                <a href="../chapter13/locallization_implement.html">
            
                    
                    13.2：实现Localizations
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.6.3" data-path="../chapter13/intl.html">
            
                <a href="../chapter13/intl.html">
            
                    
                    13.3：使用Intl包
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.6.4" data-path="../chapter13/faq.html">
            
                <a href="../chapter13/faq.html">
            
                    
                    13.4：国际化常见问题
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    
        <li class="chapter " data-level="3.7" data-path="../chapter14/">
            
                <a href="../chapter14/">
            
                    
                    第十四章：Flutter核心原理
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="3.7.1" data-path="../chapter14/flutter_ui_system.html">
            
                <a href="../chapter14/flutter_ui_system.html">
            
                    
                    14.1：Flutter UI系统
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.7.2" data-path="../chapter14/element_buildcontext.html">
            
                <a href="../chapter14/element_buildcontext.html">
            
                    
                    14.2：Element和BuildContext
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.7.3" data-path="../chapter14/render_object.html">
            
                <a href="../chapter14/render_object.html">
            
                    
                    14.3：RenderObject与RenderBox
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.7.4" data-path="../chapter14/flutter_app_startup.html">
            
                <a href="../chapter14/flutter_app_startup.html">
            
                    
                    14.4：Flutter从启动到显示
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="3.7.5" data-path="../chapter14/image_and_cache.html">
            
                <a href="../chapter14/image_and_cache.html">
            
                    
                    14.5：Flutter图片加载与缓存
            
                </a>
            

            
        </li>
    

            </ul>
            
        </li>
    

    
        
        <li class="header">实例篇</li>
        
        
    
        <li class="chapter " data-level="4.1" data-path="../chapter15/intro.html">
            
                <a href="../chapter15/intro.html">
            
                    
                    第十五章：一个完整的Flutter应用
            
                </a>
            

            
            <ul class="articles">
                
    
        <li class="chapter " data-level="4.1.1" data-path="../chapter15/intro.html">
            
                <a href="../chapter15/intro.html">
            
                    
                    15.1：应用简介
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.2" data-path="../chapter15/code_structure.html">
            
                <a href="../chapter15/code_structure.html">
            
                    
                    15.2：APP代码结构
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.3" data-path="../chapter15/models.html">
            
                <a href="../chapter15/models.html">
            
                    
                    15.3：Model类定义
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.4" data-path="../chapter15/globals.html">
            
                <a href="../chapter15/globals.html">
            
                    
                    15.4：全局变量及共享状态
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.5" data-path="../chapter15/network.html">
            
                <a href="../chapter15/network.html">
            
                    
                    15.5：网络请求封装
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.6" data-path="../chapter15/entry.html">
            
                <a href="../chapter15/entry.html">
            
                    
                    15.6：App入口及首页
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.1.7" data-path="../chapter15/login_page.html">
            
                <a href="../chapter15/login_page.html">
            
                    
                    15.7：登录页
            
                </a>
            

            
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        <li class="chapter " data-level="4.1.8" data-path="../chapter15/language_and_theme_setting.html">
            
                <a href="../chapter15/language_and_theme_setting.html">
            
                    
                    15.8：多语言和多主题
            
                </a>
            

            
        </li>
    

            </ul>
            
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                                <h1 id="112-&#x901A;&#x8FC7;httpclient&#x53D1;&#x8D77;http&#x8BF7;&#x6C42;">11.2 &#x901A;&#x8FC7;HttpClient&#x53D1;&#x8D77;HTTP&#x8BF7;&#x6C42;</h1>
<p>Dart IO&#x5E93;&#x4E2D;&#x63D0;&#x4F9B;&#x4E86;&#x7528;&#x4E8E;&#x53D1;&#x8D77;Http&#x8BF7;&#x6C42;&#x7684;&#x4E00;&#x4E9B;&#x7C7B;&#xFF0C;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x76F4;&#x63A5;&#x4F7F;&#x7528;<code>HttpClient</code>&#x6765;&#x53D1;&#x8D77;&#x8BF7;&#x6C42;&#x3002;&#x4F7F;&#x7528;<code>HttpClient</code>&#x53D1;&#x8D77;&#x8BF7;&#x6C42;&#x5206;&#x4E3A;&#x4E94;&#x6B65;&#xFF1A;</p>
<ol>
<li><p>&#x521B;&#x5EFA;&#x4E00;&#x4E2A;<code>HttpClient</code>&#xFF1A;</p>
<pre class="language-"><code class="lang-dart"> HttpClient httpClient <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">HttpClient</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
</li>
<li><p>&#x6253;&#x5F00;Http&#x8FDE;&#x63A5;&#xFF0C;&#x8BBE;&#x7F6E;&#x8BF7;&#x6C42;&#x5934;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">HttpClientRequest request <span class="token operator">=</span> <span class="token keyword">await</span> httpClient<span class="token punctuation">.</span><span class="token function">getUrl</span><span class="token punctuation">(</span>uri<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x8FD9;&#x4E00;&#x6B65;&#x53EF;&#x4EE5;&#x4F7F;&#x7528;&#x4EFB;&#x610F;Http Method&#xFF0C;&#x5982;<code>httpClient.post(...)</code>&#x3001;<code>httpClient.delete(...)</code>&#x7B49;&#x3002;&#x5982;&#x679C;&#x5305;&#x542B;Query&#x53C2;&#x6570;&#xFF0C;&#x53EF;&#x4EE5;&#x5728;&#x6784;&#x5EFA;uri&#x65F6;&#x6DFB;&#x52A0;&#xFF0C;&#x5982;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">Uri uri<span class="token operator">=</span><span class="token function">Uri</span><span class="token punctuation">(</span>scheme<span class="token punctuation">:</span> <span class="token string">&quot;https&quot;</span><span class="token punctuation">,</span> host<span class="token punctuation">:</span> <span class="token string">&quot;flutterchina.club&quot;</span><span class="token punctuation">,</span> queryParameters<span class="token punctuation">:</span> <span class="token punctuation">{</span>
    <span class="token string">&quot;xx&quot;</span><span class="token punctuation">:</span><span class="token string">&quot;xx&quot;</span><span class="token punctuation">,</span>
    <span class="token string">&quot;yy&quot;</span><span class="token punctuation">:</span><span class="token string">&quot;dd&quot;</span>
  <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x901A;&#x8FC7;<code>HttpClientRequest</code>&#x53EF;&#x4EE5;&#x8BBE;&#x7F6E;&#x8BF7;&#x6C42;header&#xFF0C;&#x5982;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">request<span class="token punctuation">.</span>headers<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span><span class="token string">&quot;user-agent&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;test&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x5982;&#x679C;&#x662F;post&#x6216;put&#x7B49;&#x53EF;&#x4EE5;&#x643A;&#x5E26;&#x8BF7;&#x6C42;&#x4F53;&#x65B9;&#x6CD5;&#xFF0C;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;HttpClientRequest&#x5BF9;&#x8C61;&#x53D1;&#x9001;request body&#xFF0C;&#x5982;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">String payload<span class="token operator">=</span><span class="token string">&quot;...&quot;</span><span class="token punctuation">;</span>
request<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span>utf8<span class="token punctuation">.</span><span class="token function">encode</span><span class="token punctuation">(</span>payload<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span> 
<span class="token comment">//request.addStream(_inputStream); //&#x53EF;&#x4EE5;&#x76F4;&#x63A5;&#x6DFB;&#x52A0;&#x8F93;&#x5165;&#x6D41;</span>
</code></pre>
</li>
<li><p>&#x7B49;&#x5F85;&#x8FDE;&#x63A5;&#x670D;&#x52A1;&#x5668;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">HttpClientResponse response <span class="token operator">=</span> <span class="token keyword">await</span> request<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x8FD9;&#x4E00;&#x6B65;&#x5B8C;&#x6210;&#x540E;&#xFF0C;&#x8BF7;&#x6C42;&#x4FE1;&#x606F;&#x5C31;&#x5DF2;&#x7ECF;&#x53D1;&#x9001;&#x7ED9;&#x670D;&#x52A1;&#x5668;&#x4E86;&#xFF0C;&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;<code>HttpClientResponse</code>&#x5BF9;&#x8C61;&#xFF0C;&#x5B83;&#x5305;&#x542B;&#x54CD;&#x5E94;&#x5934;&#xFF08;header&#xFF09;&#x548C;&#x54CD;&#x5E94;&#x6D41;(&#x54CD;&#x5E94;&#x4F53;&#x7684;Stream)&#xFF0C;&#x63A5;&#x4E0B;&#x6765;&#x5C31;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x8BFB;&#x53D6;&#x54CD;&#x5E94;&#x6D41;&#x6765;&#x83B7;&#x53D6;&#x54CD;&#x5E94;&#x5185;&#x5BB9;&#x3002;</p>
</li>
<li><p>&#x8BFB;&#x53D6;&#x54CD;&#x5E94;&#x5185;&#x5BB9;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">String responseBody <span class="token operator">=</span> <span class="token keyword">await</span> response<span class="token punctuation">.</span><span class="token function">transform</span><span class="token punctuation">(</span>utf8<span class="token punctuation">.</span>decoder<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x6211;&#x4EEC;&#x901A;&#x8FC7;&#x8BFB;&#x53D6;&#x54CD;&#x5E94;&#x6D41;&#x6765;&#x83B7;&#x53D6;&#x670D;&#x52A1;&#x5668;&#x8FD4;&#x56DE;&#x7684;&#x6570;&#x636E;&#xFF0C;&#x5728;&#x8BFB;&#x53D6;&#x65F6;&#x6211;&#x4EEC;&#x53EF;&#x4EE5;&#x8BBE;&#x7F6E;&#x7F16;&#x7801;&#x683C;&#x5F0F;&#xFF0C;&#x8FD9;&#x91CC;&#x662F;utf8&#x3002;</p>
</li>
<li><p>&#x8BF7;&#x6C42;&#x7ED3;&#x675F;&#xFF0C;&#x5173;&#x95ED;<code>HttpClient</code>&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">httpClient<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p> &#x5173;&#x95ED;client&#x540E;&#xFF0C;&#x901A;&#x8FC7;&#x8BE5;client&#x53D1;&#x8D77;&#x7684;&#x6240;&#x6709;&#x8BF7;&#x6C42;&#x90FD;&#x4F1A;&#x4E2D;&#x6B62;&#x3002;</p>
</li>
</ol>
<h4 id="&#x793A;&#x4F8B;">&#x793A;&#x4F8B;</h4>
<p>&#x6211;&#x4EEC;&#x5B9E;&#x73B0;&#x4E00;&#x4E2A;&#x83B7;&#x53D6;&#x767E;&#x5EA6;&#x9996;&#x9875;html&#x7684;&#x4F8B;&#x5B50;&#xFF0C;&#x793A;&#x4F8B;&#x6548;&#x679C;&#x5982;&#x56FE;11-1&#x6240;&#x793A;&#xFF1A;</p>
<p>&#x200B;    <img src="https://pcdn.flutterchina.club/imgs/11-1.png" alt="&#x56FE;11-1"></p>
<p>&#x70B9;&#x51FB;&#x201C;&#x83B7;&#x53D6;&#x767E;&#x5EA6;&#x9996;&#x9875;&#x201D;&#x6309;&#x94AE;&#x540E;&#xFF0C;&#x4F1A;&#x8BF7;&#x6C42;&#x767E;&#x5EA6;&#x9996;&#x9875;&#xFF0C;&#x8BF7;&#x6C42;&#x6210;&#x529F;&#x540E;&#xFF0C;&#x6211;&#x4EEC;&#x5C06;&#x8FD4;&#x56DE;&#x5185;&#x5BB9;&#x663E;&#x793A;&#x51FA;&#x6765;&#x5E76;&#x5728;&#x63A7;&#x5236;&#x53F0;&#x6253;&#x5370;&#x54CD;&#x5E94;header&#xFF0C;&#x4EE3;&#x7801;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart"><span class="token keyword">import</span> <span class="token string">&apos;dart:convert&apos;</span><span class="token punctuation">;</span>
<span class="token keyword">import</span> <span class="token string">&apos;dart:io&apos;</span><span class="token punctuation">;</span>

<span class="token keyword">import</span> <span class="token string">&apos;package:flutter/material.dart&apos;</span><span class="token punctuation">;</span>

<span class="token keyword">class</span> <span class="token class-name">HttpTestRoute</span> <span class="token keyword">extends</span> <span class="token class-name">StatefulWidget</span> <span class="token punctuation">{</span>
  <span class="token metadata symbol">@override</span>
  _HttpTestRouteState <span class="token function">createState</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token operator">=</span><span class="token operator">&gt;</span> <span class="token keyword">new</span> <span class="token class-name">_HttpTestRouteState</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span>

<span class="token keyword">class</span> <span class="token class-name">_HttpTestRouteState</span> <span class="token keyword">extends</span> <span class="token class-name">State</span><span class="token operator">&lt;</span>HttpTestRoute<span class="token operator">&gt;</span> <span class="token punctuation">{</span>
  bool _loading <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
  String _text <span class="token operator">=</span> <span class="token string">&quot;&quot;</span><span class="token punctuation">;</span>

  <span class="token metadata symbol">@override</span>
  Widget <span class="token function">build</span><span class="token punctuation">(</span>BuildContext context<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token keyword">return</span> <span class="token function">ConstrainedBox</span><span class="token punctuation">(</span>
      constraints<span class="token punctuation">:</span> BoxConstraints<span class="token punctuation">.</span><span class="token function">expand</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
      child<span class="token punctuation">:</span> <span class="token function">SingleChildScrollView</span><span class="token punctuation">(</span>
        child<span class="token punctuation">:</span> <span class="token function">Column</span><span class="token punctuation">(</span>
          children<span class="token punctuation">:</span> <span class="token operator">&lt;</span>Widget<span class="token operator">&gt;</span><span class="token punctuation">[</span>
            <span class="token function">RaisedButton</span><span class="token punctuation">(</span>
                child<span class="token punctuation">:</span> <span class="token function">Text</span><span class="token punctuation">(</span><span class="token string">&quot;&#x83B7;&#x53D6;&#x767E;&#x5EA6;&#x9996;&#x9875;&quot;</span><span class="token punctuation">)</span><span class="token punctuation">,</span>
                onPressed<span class="token punctuation">:</span> _loading <span class="token operator">?</span> <span class="token keyword">null</span> <span class="token punctuation">:</span> <span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token keyword">async</span> <span class="token punctuation">{</span>
                  <span class="token function">setState</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
                    _loading <span class="token operator">=</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
                    _text <span class="token operator">=</span> <span class="token string">&quot;&#x6B63;&#x5728;&#x8BF7;&#x6C42;...&quot;</span><span class="token punctuation">;</span>
                  <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                  <span class="token keyword">try</span> <span class="token punctuation">{</span>
                    <span class="token comment">//&#x521B;&#x5EFA;&#x4E00;&#x4E2A;HttpClient</span>
                    HttpClient httpClient <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">HttpClient</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token comment">//&#x6253;&#x5F00;Http&#x8FDE;&#x63A5;</span>
                    HttpClientRequest request <span class="token operator">=</span> <span class="token keyword">await</span> httpClient<span class="token punctuation">.</span><span class="token function">getUrl</span><span class="token punctuation">(</span>
                        Uri<span class="token punctuation">.</span><span class="token function">parse</span><span class="token punctuation">(</span><span class="token string">&quot;https://www.baidu.com&quot;</span><span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token comment">//&#x4F7F;&#x7528;iPhone&#x7684;UA</span>
                    request<span class="token punctuation">.</span>headers<span class="token punctuation">.</span><span class="token function">add</span><span class="token punctuation">(</span><span class="token string">&quot;user-agent&quot;</span><span class="token punctuation">,</span> <span class="token string">&quot;Mozilla/5.0 (iPhone; CPU iPhone OS 10_3_1 like Mac OS X) AppleWebKit/603.1.30 (KHTML, like Gecko) Version/10.0 Mobile/14E304 Safari/602.1&quot;</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token comment">//&#x7B49;&#x5F85;&#x8FDE;&#x63A5;&#x670D;&#x52A1;&#x5668;&#xFF08;&#x4F1A;&#x5C06;&#x8BF7;&#x6C42;&#x4FE1;&#x606F;&#x53D1;&#x9001;&#x7ED9;&#x670D;&#x52A1;&#x5668;&#xFF09;</span>
                    HttpClientResponse response <span class="token operator">=</span> <span class="token keyword">await</span> request<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token comment">//&#x8BFB;&#x53D6;&#x54CD;&#x5E94;&#x5185;&#x5BB9;</span>
                    _text <span class="token operator">=</span> <span class="token keyword">await</span> response<span class="token punctuation">.</span><span class="token function">transform</span><span class="token punctuation">(</span>utf8<span class="token punctuation">.</span>decoder<span class="token punctuation">)</span><span class="token punctuation">.</span><span class="token function">join</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                    <span class="token comment">//&#x8F93;&#x51FA;&#x54CD;&#x5E94;&#x5934;</span>
                    <span class="token function">print</span><span class="token punctuation">(</span>response<span class="token punctuation">.</span>headers<span class="token punctuation">)</span><span class="token punctuation">;</span>

                    <span class="token comment">//&#x5173;&#x95ED;client&#x540E;&#xFF0C;&#x901A;&#x8FC7;&#x8BE5;client&#x53D1;&#x8D77;&#x7684;&#x6240;&#x6709;&#x8BF7;&#x6C42;&#x90FD;&#x4F1A;&#x4E2D;&#x6B62;&#x3002;</span>
                    httpClient<span class="token punctuation">.</span><span class="token function">close</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>

                  <span class="token punctuation">}</span> <span class="token keyword">catch</span> <span class="token punctuation">(</span>e<span class="token punctuation">)</span> <span class="token punctuation">{</span>
                    _text <span class="token operator">=</span> <span class="token string">&quot;&#x8BF7;&#x6C42;&#x5931;&#x8D25;&#xFF1A;$e&quot;</span><span class="token punctuation">;</span>
                  <span class="token punctuation">}</span> <span class="token keyword">finally</span> <span class="token punctuation">{</span>
                    <span class="token function">setState</span><span class="token punctuation">(</span><span class="token punctuation">(</span><span class="token punctuation">)</span> <span class="token punctuation">{</span>
                      _loading <span class="token operator">=</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
                    <span class="token punctuation">}</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
                  <span class="token punctuation">}</span>
                <span class="token punctuation">}</span>
            <span class="token punctuation">)</span><span class="token punctuation">,</span>
            <span class="token function">Container</span><span class="token punctuation">(</span>
                width<span class="token punctuation">:</span> MediaQuery<span class="token punctuation">.</span><span class="token function">of</span><span class="token punctuation">(</span>context<span class="token punctuation">)</span><span class="token punctuation">.</span>size<span class="token punctuation">.</span>width<span class="token operator">-</span><span class="token number">50.0</span><span class="token punctuation">,</span>
                child<span class="token punctuation">:</span> <span class="token function">Text</span><span class="token punctuation">(</span>_text<span class="token punctuation">.</span><span class="token function">replaceAll</span><span class="token punctuation">(</span><span class="token keyword">new</span> <span class="token class-name">RegExp</span><span class="token punctuation">(</span><span class="token string">r&quot;\s&quot;</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token string">&quot;&quot;</span><span class="token punctuation">)</span><span class="token punctuation">)</span>
            <span class="token punctuation">)</span>
          <span class="token punctuation">]</span><span class="token punctuation">,</span>
        <span class="token punctuation">)</span><span class="token punctuation">,</span>
      <span class="token punctuation">)</span><span class="token punctuation">,</span>
    <span class="token punctuation">)</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
<span class="token punctuation">}</span>
</code></pre>
<p>&#x63A7;&#x5236;&#x53F0;&#x8F93;&#x51FA;&#xFF1A;</p>
<pre class="language-"><code>I/flutter (18545): connection: Keep-Alive
I/flutter (18545): cache-control: no-cache
I/flutter (18545): set-cookie: ....  //&#x6709;&#x591A;&#x4E2A;&#xFF0C;&#x7701;&#x7565;...
I/flutter (18545): transfer-encoding: chunked
I/flutter (18545): date: Tue, 30 Oct 2018 10:00:52 GMT
I/flutter (18545): content-encoding: gzip
I/flutter (18545): vary: Accept-Encoding
I/flutter (18545): strict-transport-security: max-age=172800
I/flutter (18545): content-type: text/html;charset=utf-8
I/flutter (18545): tracecode: 00525262401065761290103018, 00522983
</code></pre><h4 id="httpclient&#x914D;&#x7F6E;">HttpClient&#x914D;&#x7F6E;</h4>
<p><code>HttpClient</code>&#x6709;&#x5F88;&#x591A;&#x5C5E;&#x6027;&#x53EF;&#x4EE5;&#x914D;&#x7F6E;&#xFF0C;&#x5E38;&#x7528;&#x7684;&#x5C5E;&#x6027;&#x5217;&#x8868;&#x5982;&#x4E0B;&#xFF1A;</p>
<table>
<thead>
<tr>
<th>&#x5C5E;&#x6027;</th>
<th>&#x542B;&#x4E49;</th>
</tr>
</thead>
<tbody>
<tr>
<td>idleTimeout</td>
<td>&#x5BF9;&#x5E94;&#x8BF7;&#x6C42;&#x5934;&#x4E2D;&#x7684;keep-alive&#x5B57;&#x6BB5;&#x503C;&#xFF0C;&#x4E3A;&#x4E86;&#x907F;&#x514D;&#x9891;&#x7E41;&#x5EFA;&#x7ACB;&#x8FDE;&#x63A5;&#xFF0C;httpClient&#x5728;&#x8BF7;&#x6C42;&#x7ED3;&#x675F;&#x540E;&#x4F1A;&#x4FDD;&#x6301;&#x8FDE;&#x63A5;&#x4E00;&#x6BB5;&#x65F6;&#x95F4;&#xFF0C;&#x8D85;&#x8FC7;&#x8FD9;&#x4E2A;&#x9608;&#x503C;&#x540E;&#x624D;&#x4F1A;&#x5173;&#x95ED;&#x8FDE;&#x63A5;&#x3002;</td>
</tr>
<tr>
<td>connectionTimeout</td>
<td>&#x548C;&#x670D;&#x52A1;&#x5668;&#x5EFA;&#x7ACB;&#x8FDE;&#x63A5;&#x7684;&#x8D85;&#x65F6;&#xFF0C;&#x5982;&#x679C;&#x8D85;&#x8FC7;&#x8FD9;&#x4E2A;&#x503C;&#x5219;&#x4F1A;&#x629B;&#x51FA;SocketException&#x5F02;&#x5E38;&#x3002;</td>
</tr>
<tr>
<td>maxConnectionsPerHost</td>
<td>&#x540C;&#x4E00;&#x4E2A;host&#xFF0C;&#x540C;&#x65F6;&#x5141;&#x8BB8;&#x5EFA;&#x7ACB;&#x8FDE;&#x63A5;&#x7684;&#x6700;&#x5927;&#x6570;&#x91CF;&#x3002;</td>
</tr>
<tr>
<td>autoUncompress</td>
<td>&#x5BF9;&#x5E94;&#x8BF7;&#x6C42;&#x5934;&#x4E2D;&#x7684;Content-Encoding&#xFF0C;&#x5982;&#x679C;&#x8BBE;&#x7F6E;&#x4E3A;true&#xFF0C;&#x5219;&#x8BF7;&#x6C42;&#x5934;&#x4E2D;Content-Encoding&#x7684;&#x503C;&#x4E3A;&#x5F53;&#x524D;HttpClient&#x652F;&#x6301;&#x7684;&#x538B;&#x7F29;&#x7B97;&#x6CD5;&#x5217;&#x8868;&#xFF0C;&#x76EE;&#x524D;&#x53EA;&#x6709;&quot;gzip&quot;</td>
</tr>
<tr>
<td>userAgent</td>
<td>&#x5BF9;&#x5E94;&#x8BF7;&#x6C42;&#x5934;&#x4E2D;&#x7684;User-Agent&#x5B57;&#x6BB5;&#x3002;</td>
</tr>
</tbody>
</table>
<p>&#x53EF;&#x4EE5;&#x53D1;&#x73B0;&#xFF0C;&#x6709;&#x4E9B;&#x5C5E;&#x6027;&#x53EA;&#x662F;&#x4E3A;&#x4E86;&#x66F4;&#x65B9;&#x4FBF;&#x7684;&#x8BBE;&#x7F6E;&#x8BF7;&#x6C42;&#x5934;&#xFF0C;&#x5BF9;&#x4E8E;&#x8FD9;&#x4E9B;&#x5C5E;&#x6027;&#xFF0C;&#x4F60;&#x5B8C;&#x5168;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;<code>HttpClientRequest</code>&#x76F4;&#x63A5;&#x8BBE;&#x7F6E;header&#xFF0C;&#x4E0D;&#x540C;&#x7684;&#x662F;&#x901A;&#x8FC7;<code>HttpClient</code>&#x8BBE;&#x7F6E;&#x7684;&#x5BF9;&#x6574;&#x4E2A;<code>httpClient</code>&#x90FD;&#x751F;&#x6548;&#xFF0C;&#x800C;&#x901A;&#x8FC7;<code>HttpClientRequest</code>&#x8BBE;&#x7F6E;&#x7684;&#x53EA;&#x5BF9;&#x5F53;&#x524D;&#x8BF7;&#x6C42;&#x751F;&#x6548;&#x3002;</p>
<h4 id="http&#x8BF7;&#x6C42;&#x8BA4;&#x8BC1;">HTTP&#x8BF7;&#x6C42;&#x8BA4;&#x8BC1;</h4>
<p>Http&#x534F;&#x8BAE;&#x7684;&#x8BA4;&#x8BC1;&#xFF08;Authentication&#xFF09;&#x673A;&#x5236;&#x53EF;&#x4EE5;&#x7528;&#x4E8E;&#x4FDD;&#x62A4;&#x975E;&#x516C;&#x5F00;&#x8D44;&#x6E90;&#x3002;&#x5982;&#x679C;Http&#x670D;&#x52A1;&#x5668;&#x5F00;&#x542F;&#x4E86;&#x8BA4;&#x8BC1;&#xFF0C;&#x90A3;&#x4E48;&#x7528;&#x6237;&#x5728;&#x53D1;&#x8D77;&#x8BF7;&#x6C42;&#x65F6;&#x5C31;&#x9700;&#x8981;&#x643A;&#x5E26;&#x7528;&#x6237;&#x51ED;&#x636E;&#xFF0C;&#x5982;&#x679C;&#x4F60;&#x5728;&#x6D4F;&#x89C8;&#x5668;&#x4E2D;&#x8BBF;&#x95EE;&#x4E86;&#x542F;&#x7528;Basic&#x8BA4;&#x8BC1;&#x7684;&#x8D44;&#x6E90;&#x65F6;&#xFF0C;&#x6D4F;&#x89C8;&#x5C31;&#x4F1A;&#x5F39;&#x51FA;&#x4E00;&#x4E2A;&#x767B;&#x5F55;&#x6846;&#xFF0C;&#x5982;&#xFF1A;</p>
<p><img src="https://cdn.jsdelivr.net/gh/flutterchina/flutter-in-action@1.0/docs/imgs/image-20181031114207514.png" alt="image-20181031114207514"></p>
<p>&#x6211;&#x4EEC;&#x5148;&#x770B;&#x770B;Basic&#x8BA4;&#x8BC1;&#x7684;&#x57FA;&#x672C;&#x8FC7;&#x7A0B;&#xFF1A;</p>
<ol>
<li><p>&#x5BA2;&#x6237;&#x7AEF;&#x53D1;&#x9001;http&#x8BF7;&#x6C42;&#x7ED9;&#x670D;&#x52A1;&#x5668;&#xFF0C;&#x670D;&#x52A1;&#x5668;&#x9A8C;&#x8BC1;&#x8BE5;&#x7528;&#x6237;&#x662F;&#x5426;&#x5DF2;&#x7ECF;&#x767B;&#x5F55;&#x9A8C;&#x8BC1;&#x8FC7;&#x4E86;&#xFF0C;&#x5982;&#x679C;&#x6CA1;&#x6709;&#x7684;&#x8BDD;&#xFF0C;  &#x670D;&#x52A1;&#x5668;&#x4F1A;&#x8FD4;&#x56DE;&#x4E00;&#x4E2A;401 Unauthozied&#x7ED9;&#x5BA2;&#x6237;&#x7AEF;&#xFF0C;&#x5E76;&#x4E14;&#x5728;&#x54CD;&#x5E94;header&#x4E2D;&#x6DFB;&#x52A0;&#x4E00;&#x4E2A; &#x201C;WWW-Authenticate&#x201D; &#x5B57;&#x6BB5;&#xFF0C;&#x4F8B;&#x5982;&#xFF1A;</p>
<pre class="language-"><code>WWW-Authenticate: Basic realm=&quot;admin&quot;
</code></pre><p>&#x5176;&#x4E2D;&quot;Basic&quot;&#x4E3A;&#x8BA4;&#x8BC1;&#x65B9;&#x5F0F;&#xFF0C;realm&#x4E3A;&#x7528;&#x6237;&#x89D2;&#x8272;&#x7684;&#x5206;&#x7EC4;&#xFF0C;&#x53EF;&#x4EE5;&#x5728;&#x540E;&#x53F0;&#x6DFB;&#x52A0;&#x5206;&#x7EC4;&#x3002;</p>
</li>
<li><p>&#x5BA2;&#x6237;&#x7AEF;&#x5F97;&#x5230;&#x54CD;&#x5E94;&#x7801;&#x540E;&#xFF0C;&#x5C06;&#x7528;&#x6237;&#x540D;&#x548C;&#x5BC6;&#x7801;&#x8FDB;&#x884C;base64&#x7F16;&#x7801;&#xFF08;&#x683C;&#x5F0F;&#x4E3A;&#x7528;&#x6237;&#x540D;:&#x5BC6;&#x7801;&#xFF09;&#xFF0C;&#x8BBE;&#x7F6E;&#x8BF7;&#x6C42;&#x5934;Authorization&#xFF0C;&#x7EE7;&#x7EED;&#x8BBF;&#x95EE; :</p>
<pre class="language-"><code>Authorization: Basic YXXFISDJFISJFGIJIJG
</code></pre><p>&#x670D;&#x52A1;&#x5668;&#x9A8C;&#x8BC1;&#x7528;&#x6237;&#x51ED;&#x636E;&#xFF0C;&#x5982;&#x679C;&#x901A;&#x8FC7;&#x5C31;&#x8FD4;&#x56DE;&#x8D44;&#x6E90;&#x5185;&#x5BB9;&#x3002;</p>
</li>
</ol>
<p>&#x6CE8;&#x610F;&#xFF0C;Http&#x7684;&#x65B9;&#x5F0F;&#x9664;&#x4E86;Basic&#x8BA4;&#x8BC1;&#x4E4B;&#x5916;&#x8FD8;&#x6709;&#xFF1A;Digest&#x8BA4;&#x8BC1;&#x3001;Client&#x8BA4;&#x8BC1;&#x3001;Form Based&#x8BA4;&#x8BC1;&#x7B49;&#xFF0C;&#x76EE;&#x524D;Flutter&#x7684;HttpClient&#x53EA;&#x652F;&#x6301;Basic&#x548C;Digest&#x4E24;&#x79CD;&#x8BA4;&#x8BC1;&#x65B9;&#x5F0F;&#xFF0C;&#x8FD9;&#x4E24;&#x79CD;&#x8BA4;&#x8BC1;&#x65B9;&#x5F0F;&#x6700;&#x5927;&#x7684;&#x533A;&#x522B;&#x662F;&#x53D1;&#x9001;&#x7528;&#x6237;&#x51ED;&#x636E;&#x65F6;&#xFF0C;&#x5BF9;&#x4E8E;&#x7528;&#x6237;&#x51ED;&#x636E;&#x7684;&#x5185;&#x5BB9;&#xFF0C;&#x524D;&#x8005;&#x53EA;&#x662F;&#x7B80;&#x5355;&#x7684;&#x901A;&#x8FC7;Base64&#x7F16;&#x7801;&#xFF08;&#x53EF;&#x9006;&#xFF09;&#xFF0C;&#x800C;&#x540E;&#x8005;&#x4F1A;&#x8FDB;&#x884C;&#x54C8;&#x5E0C;&#x8FD0;&#x7B97;&#xFF0C;&#x76F8;&#x5BF9;&#x6765;&#x8BF4;&#x5B89;&#x5168;&#x4E00;&#x70B9;&#x70B9;&#xFF0C;&#x4F46;&#x662F;&#x4E3A;&#x4E86;&#x5B89;&#x5168;&#x8D77;&#x89C1;&#xFF0C;<strong>&#x65E0;&#x8BBA;&#x662F;&#x91C7;&#x7528;Basic&#x8BA4;&#x8BC1;&#x8FD8;&#x662F;Digest&#x8BA4;&#x8BC1;&#xFF0C;&#x90FD;&#x5E94;&#x8BE5;&#x5728;Https&#x534F;&#x8BAE;&#x4E0B;</strong>&#xFF0C;&#x8FD9;&#x6837;&#x53EF;&#x4EE5;&#x9632;&#x6B62;&#x6293;&#x5305;&#x548C;&#x4E2D;&#x95F4;&#x4EBA;&#x653B;&#x51FB;&#x3002;</p>
<p><code>HttpClient</code>&#x5173;&#x4E8E;Http&#x8BA4;&#x8BC1;&#x7684;&#x65B9;&#x6CD5;&#x548C;&#x5C5E;&#x6027;&#xFF1A;</p>
<ol>
<li><p><code>addCredentials(Uri url, String realm, HttpClientCredentials credentials)</code></p>
<p>&#x8BE5;&#x65B9;&#x6CD5;&#x7528;&#x4E8E;&#x6DFB;&#x52A0;&#x7528;&#x6237;&#x51ED;&#x636E;,&#x5982;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">httpClient<span class="token punctuation">.</span><span class="token function">addCredentials</span><span class="token punctuation">(</span>_uri<span class="token punctuation">,</span>
 <span class="token string">&quot;admin&quot;</span><span class="token punctuation">,</span> 
  <span class="token keyword">new</span> <span class="token class-name">HttpClientBasicCredentials</span><span class="token punctuation">(</span><span class="token string">&quot;username&quot;</span><span class="token punctuation">,</span><span class="token string">&quot;password&quot;</span><span class="token punctuation">)</span><span class="token punctuation">,</span> <span class="token comment">//Basic&#x8BA4;&#x8BC1;&#x51ED;&#x636E;</span>
<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x5982;&#x679C;&#x662F;Digest&#x8BA4;&#x8BC1;&#xFF0C;&#x53EF;&#x4EE5;&#x521B;&#x5EFA;Digest&#x8BA4;&#x8BC1;&#x51ED;&#x636E;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart"><span class="token function">HttpClientDigestCredentials</span><span class="token punctuation">(</span><span class="token string">&quot;username&quot;</span><span class="token punctuation">,</span><span class="token string">&quot;password&quot;</span><span class="token punctuation">)</span>
</code></pre>
</li>
<li><p><code>authenticate(Future<span class="token tag"><span class="token tag"><span class="token punctuation">&lt;</span>bool</span><span class="token punctuation">&gt;</span></span> f(Uri url, String scheme, String realm))</code></p>
<p>&#x8FD9;&#x662F;&#x4E00;&#x4E2A;setter&#xFF0C;&#x7C7B;&#x578B;&#x662F;&#x4E00;&#x4E2A;&#x56DE;&#x8C03;&#xFF0C;&#x5F53;&#x670D;&#x52A1;&#x5668;&#x9700;&#x8981;&#x7528;&#x6237;&#x51ED;&#x636E;&#x4E14;&#x8BE5;&#x7528;&#x6237;&#x51ED;&#x636E;&#x672A;&#x88AB;&#x6DFB;&#x52A0;&#x65F6;&#xFF0C;httpClient&#x4F1A;&#x8C03;&#x7528;&#x6B64;&#x56DE;&#x8C03;&#xFF0C;&#x5728;&#x8FD9;&#x4E2A;&#x56DE;&#x8C03;&#x5F53;&#x4E2D;&#xFF0C;&#x4E00;&#x822C;&#x4F1A;&#x8C03;&#x7528;<code>addCredential()</code>&#x6765;&#x52A8;&#x6001;&#x6DFB;&#x52A0;&#x7528;&#x6237;&#x51ED;&#x8BC1;&#xFF0C;&#x4F8B;&#x5982;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">httpClient<span class="token punctuation">.</span>authenticate<span class="token operator">=</span><span class="token punctuation">(</span>Uri url<span class="token punctuation">,</span> String scheme<span class="token punctuation">,</span> String realm<span class="token punctuation">)</span> <span class="token keyword">async</span><span class="token punctuation">{</span>
  <span class="token keyword">if</span><span class="token punctuation">(</span>url<span class="token punctuation">.</span>host<span class="token operator">==</span><span class="token string">&quot;xx.com&quot;</span> <span class="token operator">&amp;&amp;</span> realm<span class="token operator">==</span><span class="token string">&quot;admin&quot;</span><span class="token punctuation">)</span><span class="token punctuation">{</span>
    httpClient<span class="token punctuation">.</span><span class="token function">addCredentials</span><span class="token punctuation">(</span>url<span class="token punctuation">,</span>
      <span class="token string">&quot;admin&quot;</span><span class="token punctuation">,</span>
      <span class="token keyword">new</span> <span class="token class-name">HttpClientBasicCredentials</span><span class="token punctuation">(</span><span class="token string">&quot;username&quot;</span><span class="token punctuation">,</span><span class="token string">&quot;pwd&quot;</span><span class="token punctuation">)</span><span class="token punctuation">,</span> 
    <span class="token punctuation">)</span><span class="token punctuation">;</span>
    <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span>
  <span class="token punctuation">}</span>
  <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x4E00;&#x4E2A;&#x5EFA;&#x8BAE;&#x662F;&#xFF0C;&#x5982;&#x679C;&#x6240;&#x6709;&#x8BF7;&#x6C42;&#x90FD;&#x9700;&#x8981;&#x8BA4;&#x8BC1;&#xFF0C;&#x90A3;&#x4E48;&#x5E94;&#x8BE5;&#x5728;HttpClient&#x521D;&#x59CB;&#x5316;&#x65F6;&#x5C31;&#x8C03;&#x7528;<code>addCredentials()</code>&#x6765;&#x6DFB;&#x52A0;&#x5168;&#x5C40;&#x51ED;&#x8BC1;&#xFF0C;&#x800C;&#x4E0D;&#x662F;&#x53BB;&#x52A8;&#x6001;&#x6DFB;&#x52A0;&#x3002;</p>
</li>
</ol>
<h4 id="&#x4EE3;&#x7406;">&#x4EE3;&#x7406;</h4>
<p>&#x53EF;&#x4EE5;&#x901A;&#x8FC7;<code>findProxy</code>&#x6765;&#x8BBE;&#x7F6E;&#x4EE3;&#x7406;&#x7B56;&#x7565;&#xFF0C;&#x4F8B;&#x5982;&#xFF0C;&#x6211;&#x4EEC;&#x8981;&#x5C06;&#x6240;&#x6709;&#x8BF7;&#x6C42;&#x901A;&#x8FC7;&#x4EE3;&#x7406;&#x670D;&#x52A1;&#x5668;&#xFF08;192.168.1.2:8888&#xFF09;&#x53D1;&#x9001;&#x51FA;&#x53BB;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">  client<span class="token punctuation">.</span>findProxy <span class="token operator">=</span> <span class="token punctuation">(</span>uri<span class="token punctuation">)</span> <span class="token punctuation">{</span>
    <span class="token comment">// &#x5982;&#x679C;&#x9700;&#x8981;&#x8FC7;&#x6EE4;uri&#xFF0C;&#x53EF;&#x4EE5;&#x624B;&#x52A8;&#x5224;&#x65AD;</span>
    <span class="token keyword">return</span> <span class="token string">&quot;PROXY 192.168.1.2:8888&quot;</span><span class="token punctuation">;</span>
 <span class="token punctuation">}</span><span class="token punctuation">;</span>
</code></pre>
<p><code>findProxy</code> &#x56DE;&#x8C03;&#x8FD4;&#x56DE;&#x503C;&#x662F;&#x4E00;&#x4E2A;&#x9075;&#x5FAA;&#x6D4F;&#x89C8;&#x5668;PAC&#x811A;&#x672C;&#x683C;&#x5F0F;&#x7684;&#x5B57;&#x7B26;&#x4E32;&#xFF0C;&#x8BE6;&#x60C5;&#x53EF;&#x4EE5;&#x67E5;&#x770B;API&#x6587;&#x6863;&#xFF0C;&#x5982;&#x679C;&#x4E0D;&#x9700;&#x8981;&#x4EE3;&#x7406;&#xFF0C;&#x8FD4;&#x56DE;&quot;DIRECT&quot;&#x5373;&#x53EF;&#x3002;</p>
<p>&#x5728;APP&#x5F00;&#x53D1;&#x4E2D;&#xFF0C;&#x5F88;&#x591A;&#x65F6;&#x5019;&#x6211;&#x4EEC;&#x9700;&#x8981;&#x6293;&#x5305;&#x6765;&#x8C03;&#x8BD5;&#xFF0C;&#x800C;&#x6293;&#x5305;&#x8F6F;&#x4EF6;(&#x5982;charles)&#x5C31;&#x662F;&#x4E00;&#x4E2A;&#x4EE3;&#x7406;&#xFF0C;&#x8FD9;&#x65F6;&#x6211;&#x4EEC;&#x5C31;&#x53EF;&#x4EE5;&#x5C06;&#x8BF7;&#x6C42;&#x53D1;&#x9001;&#x5230;&#x6211;&#x4EEC;&#x7684;&#x6293;&#x5305;&#x8F6F;&#x4EF6;&#xFF0C;&#x6211;&#x4EEC;&#x5C31;&#x53EF;&#x4EE5;&#x5728;&#x6293;&#x5305;&#x8F6F;&#x4EF6;&#x4E2D;&#x770B;&#x5230;&#x8BF7;&#x6C42;&#x7684;&#x6570;&#x636E;&#x4E86;&#x3002;</p>
<p>&#x6709;&#x65F6;&#x4EE3;&#x7406;&#x670D;&#x52A1;&#x5668;&#x4E5F;&#x542F;&#x7528;&#x4E86;&#x8EAB;&#x4EFD;&#x9A8C;&#x8BC1;&#xFF0C;&#x8FD9;&#x548C;http&#x534F;&#x8BAE;&#x7684;&#x8BA4;&#x8BC1;&#x662F;&#x76F8;&#x4F3C;&#x7684;&#xFF0C;HttpClient&#x63D0;&#x4F9B;&#x4E86;&#x5BF9;&#x5E94;&#x7684;Proxy&#x8BA4;&#x8BC1;&#x65B9;&#x6CD5;&#x548C;&#x5C5E;&#x6027;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart"><span class="token keyword">set</span> <span class="token function">authenticateProxy</span><span class="token punctuation">(</span>
    Future<span class="token operator">&lt;</span>bool<span class="token operator">&gt;</span> <span class="token function">f</span><span class="token punctuation">(</span>String host<span class="token punctuation">,</span> int port<span class="token punctuation">,</span> String scheme<span class="token punctuation">,</span> String realm<span class="token punctuation">)</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token keyword">void</span> <span class="token function">addProxyCredentials</span><span class="token punctuation">(</span>
    String host<span class="token punctuation">,</span> int port<span class="token punctuation">,</span> String realm<span class="token punctuation">,</span> HttpClientCredentials credentials<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x4ED6;&#x4EEC;&#x7684;&#x4F7F;&#x7528;&#x65B9;&#x6CD5;&#x548C;&#x4E0A;&#x9762;&#x201C;HTTP&#x8BF7;&#x6C42;&#x8BA4;&#x8BC1;&#x201D;&#x4E00;&#x8282;&#x4E2D;&#x4ECB;&#x7ECD;&#x7684;<code>addCredentials</code>&#x548C;<code>authenticate</code> &#x76F8;&#x540C;&#xFF0C;&#x6545;&#x4E0D;&#x518D;&#x8D58;&#x8FF0;&#x3002;</p>
<h4 id="&#x8BC1;&#x4E66;&#x6821;&#x9A8C;">&#x8BC1;&#x4E66;&#x6821;&#x9A8C;</h4>
<p>Https&#x4E2D;&#x4E3A;&#x4E86;&#x9632;&#x6B62;&#x901A;&#x8FC7;&#x4F2A;&#x9020;&#x8BC1;&#x4E66;&#x800C;&#x53D1;&#x8D77;&#x7684;&#x4E2D;&#x95F4;&#x4EBA;&#x653B;&#x51FB;&#xFF0C;&#x5BA2;&#x6237;&#x7AEF;&#x5E94;&#x8BE5;&#x5BF9;&#x81EA;&#x7B7E;&#x540D;&#x6216;&#x975E;CA&#x9881;&#x53D1;&#x7684;&#x8BC1;&#x4E66;&#x8FDB;&#x884C;&#x6821;&#x9A8C;&#x3002;<code>HttpClient</code>&#x5BF9;&#x8BC1;&#x4E66;&#x6821;&#x9A8C;&#x7684;&#x903B;&#x8F91;&#x5982;&#x4E0B;&#xFF1A;</p>
<ol>
<li>&#x5982;&#x679C;&#x8BF7;&#x6C42;&#x7684;Https&#x8BC1;&#x4E66;&#x662F;&#x53EF;&#x4FE1;CA&#x9881;&#x53D1;&#x7684;&#xFF0C;&#x5E76;&#x4E14;&#x8BBF;&#x95EE;host&#x5305;&#x542B;&#x5728;&#x8BC1;&#x4E66;&#x7684;domain&#x5217;&#x8868;&#x4E2D;(&#x6216;&#x8005;&#x7B26;&#x5408;&#x901A;&#x914D;&#x89C4;&#x5219;)&#x5E76;&#x4E14;&#x8BC1;&#x4E66;&#x672A;&#x8FC7;&#x671F;&#xFF0C;&#x5219;&#x9A8C;&#x8BC1;&#x901A;&#x8FC7;&#x3002;</li>
<li>&#x5982;&#x679C;&#x7B2C;&#x4E00;&#x6B65;&#x9A8C;&#x8BC1;&#x5931;&#x8D25;&#xFF0C;&#x4F46;&#x5728;&#x521B;&#x5EFA;HttpClient&#x65F6;&#xFF0C;&#x5DF2;&#x7ECF;&#x901A;&#x8FC7;SecurityContext&#x5C06;&#x8BC1;&#x4E66;&#x6DFB;&#x52A0;&#x5230;&#x8BC1;&#x4E66;&#x4FE1;&#x4EFB;&#x94FE;&#x4E2D;&#xFF0C;&#x90A3;&#x4E48;&#x5F53;&#x670D;&#x52A1;&#x5668;&#x8FD4;&#x56DE;&#x7684;&#x8BC1;&#x4E66;&#x5728;&#x4FE1;&#x4EFB;&#x94FE;&#x4E2D;&#x7684;&#x8BDD;&#xFF0C;&#x5219;&#x9A8C;&#x8BC1;&#x901A;&#x8FC7;&#x3002;</li>
<li>&#x5982;&#x679C;1&#x3001;2&#x9A8C;&#x8BC1;&#x90FD;&#x5931;&#x8D25;&#x4E86;&#xFF0C;&#x5982;&#x679C;&#x7528;&#x6237;&#x63D0;&#x4F9B;&#x4E86;<code>badCertificateCallback</code>&#x56DE;&#x8C03;&#xFF0C;&#x5219;&#x4F1A;&#x8C03;&#x7528;&#x5B83;&#xFF0C;&#x5982;&#x679C;&#x56DE;&#x8C03;&#x8FD4;&#x56DE;<code>true</code>&#xFF0C;&#x5219;&#x5141;&#x8BB8;&#x7EE7;&#x7EED;&#x94FE;&#x63A5;&#xFF0C;&#x5982;&#x679C;&#x8FD4;&#x56DE;<code>false</code>&#xFF0C;&#x5219;&#x7EC8;&#x6B62;&#x94FE;&#x63A5;&#x3002;</li>
</ol>
<p>&#x7EFC;&#x4E0A;&#x6240;&#x8FF0;&#xFF0C;&#x6211;&#x4EEC;&#x7684;&#x8BC1;&#x4E66;&#x6821;&#x9A8C;&#x5176;&#x5B9E;&#x5C31;&#x662F;&#x63D0;&#x4F9B;&#x4E00;&#x4E2A;<code>badCertificateCallback</code>&#x56DE;&#x8C03;&#xFF0C;&#x4E0B;&#x9762;&#x901A;&#x8FC7;&#x4E00;&#x4E2A;&#x793A;&#x4F8B;&#x6765;&#x8BF4;&#x660E;&#x3002;</p>
<h5 id="&#x793A;&#x4F8B;">&#x793A;&#x4F8B;</h5>
<p>&#x5047;&#x8BBE;&#x6211;&#x4EEC;&#x7684;&#x540E;&#x53F0;&#x670D;&#x52A1;&#x4F7F;&#x7528;&#x7684;&#x662F;&#x81EA;&#x7B7E;&#x540D;&#x8BC1;&#x4E66;&#xFF0C;&#x8BC1;&#x4E66;&#x683C;&#x5F0F;&#x662F;PEM&#x683C;&#x5F0F;&#xFF0C;&#x6211;&#x4EEC;&#x5C06;&#x8BC1;&#x4E66;&#x7684;&#x5185;&#x5BB9;&#x4FDD;&#x5B58;&#x5728;&#x672C;&#x5730;&#x5B57;&#x7B26;&#x4E32;&#x4E2D;&#xFF0C;&#x90A3;&#x4E48;&#x6211;&#x4EEC;&#x7684;&#x6821;&#x9A8C;&#x903B;&#x8F91;&#x5982;&#x4E0B;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">String PEM<span class="token operator">=</span><span class="token string">&quot;XXXXX&quot;</span><span class="token punctuation">;</span><span class="token comment">//&#x53EF;&#x4EE5;&#x4ECE;&#x6587;&#x4EF6;&#x8BFB;&#x53D6;</span>
<span class="token punctuation">.</span><span class="token punctuation">.</span><span class="token punctuation">.</span>
httpClient<span class="token punctuation">.</span>badCertificateCallback<span class="token operator">=</span><span class="token punctuation">(</span>X509Certificate cert<span class="token punctuation">,</span> String host<span class="token punctuation">,</span> int port<span class="token punctuation">)</span><span class="token punctuation">{</span>
  <span class="token keyword">if</span><span class="token punctuation">(</span>cert<span class="token punctuation">.</span>pem<span class="token operator">==</span>PEM<span class="token punctuation">)</span><span class="token punctuation">{</span>
    <span class="token keyword">return</span> <span class="token boolean">true</span><span class="token punctuation">;</span> <span class="token comment">//&#x8BC1;&#x4E66;&#x4E00;&#x81F4;&#xFF0C;&#x5219;&#x5141;&#x8BB8;&#x53D1;&#x9001;&#x6570;&#x636E;</span>
  <span class="token punctuation">}</span>
  <span class="token keyword">return</span> <span class="token boolean">false</span><span class="token punctuation">;</span>
<span class="token punctuation">}</span><span class="token punctuation">;</span>
</code></pre>
<p><code>X509Certificate</code>&#x662F;&#x8BC1;&#x4E66;&#x7684;&#x6807;&#x51C6;&#x683C;&#x5F0F;&#xFF0C;&#x5305;&#x542B;&#x4E86;&#x8BC1;&#x4E66;&#x9664;&#x79C1;&#x94A5;&#x5916;&#x6240;&#x6709;&#x4FE1;&#x606F;&#xFF0C;&#x8BFB;&#x8005;&#x53EF;&#x4EE5;&#x81EA;&#x884C;&#x67E5;&#x9605;&#x6587;&#x6863;&#x3002;&#x53E6;&#x5916;&#xFF0C;&#x4E0A;&#x9762;&#x7684;&#x793A;&#x4F8B;&#x6CA1;&#x6709;&#x6821;&#x9A8C;host&#xFF0C;&#x662F;&#x56E0;&#x4E3A;&#x53EA;&#x8981;&#x670D;&#x52A1;&#x5668;&#x8FD4;&#x56DE;&#x7684;&#x8BC1;&#x4E66;&#x5185;&#x5BB9;&#x548C;&#x672C;&#x5730;&#x7684;&#x4FDD;&#x5B58;&#x4E00;&#x81F4;&#x5C31;&#x5DF2;&#x7ECF;&#x80FD;&#x8BC1;&#x660E;&#x662F;&#x6211;&#x4EEC;&#x7684;&#x670D;&#x52A1;&#x5668;&#x4E86;&#xFF08;&#x800C;&#x4E0D;&#x662F;&#x4E2D;&#x95F4;&#x4EBA;&#xFF09;&#xFF0C;host&#x9A8C;&#x8BC1;&#x901A;&#x5E38;&#x662F;&#x4E3A;&#x4E86;&#x9632;&#x6B62;&#x8BC1;&#x4E66;&#x548C;&#x57DF;&#x540D;&#x4E0D;&#x5339;&#x914D;&#x3002;</p>
<p>&#x5BF9;&#x4E8E;&#x81EA;&#x7B7E;&#x540D;&#x7684;&#x8BC1;&#x4E66;&#xFF0C;&#x6211;&#x4EEC;&#x4E5F;&#x53EF;&#x4EE5;&#x5C06;&#x5176;&#x6DFB;&#x52A0;&#x5230;&#x672C;&#x5730;&#x8BC1;&#x4E66;&#x4FE1;&#x4EFB;&#x94FE;&#x4E2D;&#xFF0C;&#x8FD9;&#x6837;&#x8BC1;&#x4E66;&#x9A8C;&#x8BC1;&#x65F6;&#x5C31;&#x4F1A;&#x81EA;&#x52A8;&#x901A;&#x8FC7;&#xFF0C;&#x800C;&#x4E0D;&#x4F1A;&#x518D;&#x8D70;&#x5230;<code>badCertificateCallback</code>&#x56DE;&#x8C03;&#x4E2D;&#xFF1A;</p>
<pre class="language-"><code class="lang-dart">SecurityContext sc<span class="token operator">=</span><span class="token keyword">new</span> <span class="token class-name">SecurityContext</span><span class="token punctuation">(</span><span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//file&#x4E3A;&#x8BC1;&#x4E66;&#x8DEF;&#x5F84;</span>
sc<span class="token punctuation">.</span><span class="token function">setTrustedCertificates</span><span class="token punctuation">(</span>file<span class="token punctuation">)</span><span class="token punctuation">;</span>
<span class="token comment">//&#x521B;&#x5EFA;&#x4E00;&#x4E2A;HttpClient</span>
HttpClient httpClient <span class="token operator">=</span> <span class="token keyword">new</span> <span class="token class-name">HttpClient</span><span class="token punctuation">(</span>context<span class="token punctuation">:</span> sc<span class="token punctuation">)</span><span class="token punctuation">;</span>
</code></pre>
<p>&#x6CE8;&#x610F;&#xFF0C;&#x901A;&#x8FC7;<code>setTrustedCertificates()</code>&#x8BBE;&#x7F6E;&#x7684;&#x8BC1;&#x4E66;&#x683C;&#x5F0F;&#x5FC5;&#x987B;&#x4E3A;PEM&#x6216;PKCS12&#xFF0C;&#x5982;&#x679C;&#x8BC1;&#x4E66;&#x683C;&#x5F0F;&#x4E3A;PKCS12&#xFF0C;&#x5219;&#x9700;&#x5C06;&#x8BC1;&#x4E66;&#x5BC6;&#x7801;&#x4F20;&#x5165;&#xFF0C;&#x8FD9;&#x6837;&#x5219;&#x4F1A;&#x5728;&#x4EE3;&#x7801;&#x4E2D;&#x66B4;&#x9732;&#x8BC1;&#x4E66;&#x5BC6;&#x7801;&#xFF0C;&#x6240;&#x4EE5;&#x5BA2;&#x6237;&#x7AEF;&#x8BC1;&#x4E66;&#x6821;&#x9A8C;&#x4E0D;&#x5EFA;&#x8BAE;&#x4F7F;&#x7528;PKCS12&#x683C;&#x5F0F;&#x7684;&#x8BC1;&#x4E66;&#x3002;</p>
<h4 id="&#x603B;&#x7ED3;">&#x603B;&#x7ED3;</h4>
<p>&#x503C;&#x5F97;&#x6CE8;&#x610F;&#x7684;&#x662F;&#xFF0C;<code>HttpClient</code>&#x63D0;&#x4F9B;&#x7684;&#x8FD9;&#x4E9B;&#x5C5E;&#x6027;&#x548C;&#x65B9;&#x6CD5;&#x6700;&#x7EC8;&#x90FD;&#x4F1A;&#x4F5C;&#x7528;&#x5728;&#x8BF7;&#x6C42;header&#x91CC;&#xFF0C;&#x6211;&#x4EEC;&#x5B8C;&#x5168;&#x53EF;&#x4EE5;&#x901A;&#x8FC7;&#x624B;&#x52A8;&#x53BB;&#x8BBE;&#x7F6E;header&#x6765;&#x5B9E;&#x73B0;&#xFF0C;&#x4E4B;&#x6240;&#x4EE5;&#x63D0;&#x4F9B;&#x8FD9;&#x4E9B;&#x65B9;&#x6CD5;&#xFF0C;&#x53EA;&#x662F;&#x4E3A;&#x4E86;&#x65B9;&#x4FBF;&#x5F00;&#x53D1;&#x8005;&#x800C;&#x5DF2;&#x3002;&#x53E6;&#x5916;&#xFF0C;Http&#x534F;&#x8BAE;&#x662F;&#x4E00;&#x4E2A;&#x975E;&#x5E38;&#x91CD;&#x8981;&#x7684;&#x3001;&#x4F7F;&#x7528;&#x6700;&#x591A;&#x7684;&#x7F51;&#x7EDC;&#x534F;&#x8BAE;&#xFF0C;&#x6BCF;&#x4E00;&#x4E2A;&#x5F00;&#x53D1;&#x8005;&#x90FD;&#x5E94;&#x8BE5;&#x5BF9;http&#x534F;&#x8BAE;&#x975E;&#x5E38;&#x719F;&#x6089;&#x3002;</p>

                                
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